Subject: Dave Leonard turbo update.
From: Rotary Engine
Date: 12/4/2005, 7:44 AM
To: AA-me

>>> The modified stock turbo now has about 40 hrs.  I flew it to Mammoth
>>> last weekend and It did well.  Coming home at 17.5k I was seeing 185
>>> KTAS with an 85 kt quartering tail wind giving me 265 kts (over 300
>>> mph!) on the GPS.  Thats really cool.
>>>
>>> No problems with the turbo at all.  If it gets to 500 hrs I will
>>> consider it a success.  Max boost at SL with the w/g removed is about
>>> 45"MAP, which is perfect really.  That is as much as I would want
>>
>> to use
>>
>>> for take off and more than I can cool continuously (which is
>>
>> closer to
>>
>>> 30" give or take depending on the OAT).  No more mods planed in
>>
>> the near
>>
>>> future, just flying and getting ready for paint.
>>>
>>>
>>> Dave Leonard
>>> Turbo Rotary RV-6 N4VY
>>> http://members.aol.com/_ht_a/rotaryroster/index.html
>>> http://members.aol.com/_ht_a/vp4skydoc/index.html
>>>
>>>
>>> Thanks Dave. I assume you now have O2.
>>>
>>> Paul Lamar ...No rotor no motor.
>>>
>>
>> Dave
>>
>> This sounds great. What was your MAP at 17.5K?  Is this turbo stock
>> or the
>> did you change the trim?
>>
>> Thanks
>>
>>
>> Doug Fir
>>
>>
>>
>> Dave Leonard
>> Turbo Rotary RV-6 N4VY
>> http://members.aol.com/_ht_a/rotaryroster/index.html
>> http://members.aol.com/_ht_a/vp4skydoc/index.html
>>
>> The compressor is a 60-1 and the turbine is a TO4 clipped to fit in the
>> stock housing.  With the wastgate open can only make about 30" MAP at
>> that altitude, but I can't use it all because my prop is not big
>> enough.  I hit 6700 engine RPM but I didn't feel comfortable staying
>> there.  I plan a catto 3-blade in the near future.
>>
>> Dave Leonard
>> Turbo Rotary RV-6 N4VY
>
>
> Thanks Dave,
>
> 30" at 17.5K is not bad.  Especially with the compact unit you have.
> With a new prop and paint you are there.
>
> Doug.



Dave,
Do you have the large shaft and dynamic oil seal like John Slade ordered
on his new turbocharger?

Aubrey


Dave, another question if you don't mind: who did the work on your
turbo?Thanks
Andy in CO


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